Short answer, no.
1st age info is available, and source books such as Lords of Middle Earth (Vol 1 in particular).
The module closest to being 1st age is Court of Ardor, with a group of 1st age thralls establishing kingdoms in Southern Endor while plotting to destroy the sun and moon, resulting in the return of the Lord of Ire.
MERP itself is very dead. No incarnation of ICE may print, publish or produce MERP material.